A131689 - OEIS

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A131689 as a triangular array

1

0 1

0 1 2

0 1 6 6

0 1 14 36 24

0 1 30 150 240 120

0 1 62 540 1560 1800 720

0 1 126 1806 8400 16800 15120 5040

0 1 254 5796 40824 126000 191520 141120 40320

0 1 510 18150 186480 834120 1905120 2328480

A131689 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`6`	`14`	`30`	`62`	`126`	`254`	`510`
`6`	`36`	`150`	`540`	`1806`	`5796`	`18150`
`24`	`240`	`1560`	`8400`	`40824`	`186480`
`120`	`1800`	`16800`	`126000`	`834120`
`720`	`15120`	`191520`	`1905120`
`5040`	`141120`	`2328480`
`40320`

A131689 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`2`	`6`	`14`	`30`	`62`	`126`	`254`	`510`
			`6`	`36`	`150`	`540`	`1806`	`5796`	`18150`
				`24`	`240`	`1560`	`8400`	`40824`	`186480`
					`120`	`1800`	`16800`	`126000`	`834120`
						`720`	`15120`	`191520`	`1905120`
							`5040`	`141120`	`2328480`
								`40320`

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Last modified June 4 19:35 EDT 2024. Contains 373102 sequences. (Running on oeis4.)